{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9aa1452b8e1ef2922cbf52a8a3c3d077cf1998f1f3c7029af775451b43dd3ff0",
    "signature": "0x0113d7d9e808ed7b213e16ad02044b239603d0668acd3b7433e3df77e015be4d5f790077f2ff57ffb6c8c834dba9fb37dc1763ef3051dd43aa0a69b2e089c9e81c",
    "signer": "0x8D6829429c8794381a8c3bA2E4f15F99e5C119d4",
    "userId": "152462878"
  }
}