{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xa5d3807f9441618990ba64da29c5c28d3a781df182e957464156b0e18d3ed3f8",
    "signature": "0x487bc80921776e0ed2152e2f33c7f803bb708d9741d1e63bf7b1c44109e7785c541f0ec09b7876de16e1ccf98f4cb99d0e74e6e70d573d7e4b63bc4c72beea511c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}