{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x34a26569d3b7e568e1acd4e38e3cc01b31f4cbbf54e5c22ffb984600ce02731c",
    "signature": "0x01cf3f2a19556efb67429c48f697c6bfa21378a4f4c85a616a5e5e8feb896ae74b4ec64f87613b45534f36692c5a304ad401c4a3e46f105c51646e519ea12e9e1c",
    "signer": "0x888539CE68FE63D7A7A333a198827e2C53c5A618",
    "userId": "887482130"
  }
}