{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe21b74c223f746d642d5da0d5a5e72ed6bf139ea02db6a8bf56255c65ec680ea",
    "signature": "0x0db57aff6ee2c3543a2dc6f4ff04393748b54d324557192629914132acd641935d8bd2071a5d2b7bd2a1c0c2f3b4bb5d0b2e1a2b31cc768b6725d70f893d6fac1c",
    "signer": "0xf097AB60803934ac96CdB63a0e481928927ad6fA",
    "userId": "589361378"
  }
}