{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617072743",
    "entityType": "User",
    "nonce": "0x851128d398294fbc8a2db97f94661153946ae7e3ca076d0a3463ed44c835bc32",
    "signature": "0x8c6819f3bbd48ce1c38baf9787e4a54b7fb8411ed85db64e89ac22a0f2f5f868400b9f98fc21b7bf1b0e6a62ab13e29c3ddc5893abf4b0936464ed1ee240bd151c",
    "signer": "0x385724dD7df996433e732c73201a749C6B37f65A",
    "userId": "260480467"
  }
}