{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63449e449e159a412950ee97680a215885781da3e9838341cf1af0795b4b9604",
    "signature": "0x8fed81a2f0ec81c3d0c350be0eab051224e3f5133f7f4640bba3158611c641107d7fcdf5db27c3ba2a115754f933f4188de0c3ba4eb0d1fd07d9ef31a9748b6b1c",
    "signer": "0x62BC459951CC827396eca9Aaa4C350D9858Bf648",
    "userId": "842689538"
  }
}