{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64646",
    "entityType": "User",
    "nonce": "0x22f716e707fa8d967c2506c0c3048b2de0f87917bcebab91eef27536c533cc1a",
    "signature": "0xd639df5f3a3c730bf71be13f9c9ad21cd6f04ad69ccdad634b9075dcd61c7ac1023e1498b9d7be5a7b9fa4533790dcd286398695ec938a8f8b7ad1abc4130f621c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}