{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67966100",
    "entityType": "User",
    "nonce": "0x91d0f6cfcc43a8490d1a40e808e45af1143c1a4960cc660c23b5b3891354de5a",
    "signature": "0xb5e01861d24ad104171c1931cd3f5be92efbd8c2a738f91930b52647b81bb2495a2d049f3a8a6812fa8ad870a7efd3f502442335de5768740697ef4e5db47d6e1b",
    "signer": "0x55A4f450E154CFC8D853cA521F452162C3881349",
    "userId": "748511997"
  }
}