{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3d40ce8c195b0ca8498c2e3525e742054c2afc3360515cba778d75d6b1681f0",
    "signature": "0xbcc8dd9f9fdd6d0b9250889adbf5d4e74fdd566b569c3cd5264c7fa09ad5f4313e6bdd87da8bdcde7041d19a70a949abe7790f592cf260708da29a614814e8591b",
    "signer": "0x7D66EB5C62E56222e5A40F47f9190C62E1611CD9",
    "userId": "913116841"
  }
}