{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc331ed8a182ebae58a13988d588a0db9d1b7cd3f393f065c34f1f054f9d4ecc8",
    "signature": "0x74a05929b0371490a48699a21c19ff34c6e8e5026c6de947f8482225bb96e4d0465f146fcec1a3b44f8a0eba494d71abf54792dbce30c872ab89fceefb92e32d1b",
    "signer": "0x6bB5B0B6A1273bCe56440244a4eD0aeF244a8Fb1",
    "userId": "223368774"
  }
}