{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "913589672",
    "entityType": "User",
    "nonce": "0x7c3b9aeda1303df9cd5ae6b0d27f2ef446bb3a0ff7c7306b6416e175dcb4d050",
    "signature": "0x938d03bd36a7ad3decea7d33ba7fb67dd71f23c193535a47fae2abede84016905b587a76e3b76cb44f8f7a2197ef71fe7b1a54416930f8c84fa4ef07b834d6a71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}