{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0x33a1a74dc3cd3c90d36506f3ed19f9693324ad60d1b21ba757aaac3c6e0a5a5d",
    "signature": "0x0cf04603a4e0c219a6ad3c6bbbcaee5621cc2362c4a75703db9a359c68ebad1148516da9477772c0fca4d263caf8c344d770a4b37f283ea389c311e34bf6bc3f1c",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}