{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5cec514f2530acdd475fa1c0da10b8af2be107079aa840782b20331cbe03ae12",
    "signature": "0x297cd2ec2ae6719b28aab10ff21a6c787767fb5ef9412dfd733596e9f845c823683557fac3a4bf80a0ecd5c755b703a7516a07632236d7b5f4c352afddc4eca51b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}