{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2129b849b7e8145544e1245db90c991be2076da46874117eec36deb577b1db29",
    "signature": "0x76ed58eceed9bf23fb489e58e221ec9c8ef37d46358ba9f0ffd8fdc7de8d011673bdcf362e9f7f8ad5f2f7bdf62a558254c6fae6b7ad8fd4b8a250f8245040831b",
    "signer": "0x785aA7221545FeFaf89F23A6Ec3684cCEe06aB20",
    "userId": "580031590"
  }
}