{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515515570",
    "entityType": "User",
    "nonce": "0x2fcd574d31717109b57702f11845ebcc44a9ac87dd1ec78aa106615789f1304c",
    "signature": "0x0271ccd753d993731ecc61ac5aa12c6ab975359df3639d85cda90e9cbf192c9d4f834244d62fa9a3f585f2f0036afd970fe2fac15ed61e74eb33d96ab6d8ea491b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}