{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1313f906ba5dd69c6ddd549f68a41d4f878aaaff7429475a4ef92725e32f53f3",
    "signature": "0x9ae884983399eb061c2aaef5ee72bc73c4c170274327e370c4b70aef7cce4a8872908d54c39cb31c94578f2d9e232776af2a8274f6123b31538c408002bac4441b",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}