{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xb3fecd8eba33329bc4b2b9b7a61f7d0959e856ece424d36da352c4cc6eb0b533",
    "signature": "0x4bdb008ff690ba215a23aea6d141b567d945d6d49275aa8be9b9c1b2cc9a1846257e1974daa1397a73b660f6add90256fcc744466caa824b2ecf6084289e2a461b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}