{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "149337",
    "entityType": "User",
    "nonce": "0x7399d65e83632d079ea3ef7ee5436be6bab402ee7e1e417ccd6d30455db4f25c",
    "signature": "0xb97f2941c58f1f281d924d4b5df5af4a7cd8ba6e596b54a1c3703978288ddcce44f5196398c208dfb7eb6cdd3bca2a60de62dec7485cc6b4e8da6b88f7c8dfd31b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}