{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536917793",
    "entityType": "User",
    "nonce": "0x9178ba05e35689cac8784f332cdc12d672fabb39282d05fe4de2bc835fe33dd0",
    "signature": "0xfe4e12badc4610f23a0edfd5428eafcdf07b430c1a07e3f0f926ae4fc4314af013a520d17ab1c4c4f9d8a8cc5bef7b34bf4a4acba51964d05cd461d3b09c30c71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}